AirPlay Mac to Roku
Most modern Roku models support AirPlay, which means, in most cases, you won’t even need a separate app. This method is much faster since it’s Apple’s proprietary technology.
You need to ensure, if you have an AirPlay-compatible device, that you’re on Roku OS 9.4 or above. It’s not just the model and OS version of your streaming hardware that matters, but you also have to be on the correct version of whatever Apple device you’re using to be able to stream or mirror.
Video casting functionality requires macOS Mojave 10.14.15 or above. These versions support AirPlay 2 and will allow you to mirror or stream as long as you have a compatible Roku device.
To stream content via AirPlay, just play any video on your Mac and tap the AirPlay symbol. Choose your Roku device, and you’re all set!
Sharing a Mac's screen via AirPlay works the same way. Just open the Control Center on your Mac and click on Screen Mirroring. Choose your Roku, and your entire screen will be displayed on your TV.